I have added several more definitions to those I had last time , cleaned them up and alphabetized them.

Again, some disclaimers –
(1) In some cases, he explicitly gives credit to others for being a source for the definition,
(2) In some cases, these are definitions derived from specific biblical passages.
(3) This most likely still not a complete list, but it was all I could find.
(4) I have edited some of these a bit.
(5) Some of these are not in full context, and the link should be clicked (see specifically: Prayer)

The John Piper Dictionary
Affections (or what most people today mean by feelings): The more vigorous and sensible exercises of the inclination and will of the soul. In other words, the feelings that really matter are not mere physical sensations. They are the stirring up of the soul with some perceived treasure or threat.

Anxiety: The loss of confident security in God owing to feelings of uneasiness or foreboding that something harmful is going to happen.

Apostle: One who is sent to represent another person with authority

Atonement: The work of God in Christ, by his obedience and death, by which he cancelled the debt of our sin, appeased his

Burden: Anything that threatens to crush the joy of our faith—whether a tragedy that threatens to make us doubt God’s

Christian Hedonism: A philosophy of life built on the following five convictions:
l. The longing to be happy is a universal human experience, and it is good, not sinful.
2. We should never try to deny or resist our longing to be happy, as though it were a bad impulse. Instead we should seek to intensify this longing and nourish it with whatever will provide the deepest and most enduring satisfaction.
3. The deepest and most enduring happiness is found only in God.
4. The happiness we find in God reaches its consummation when it is shared with others in the manifold ways of love.
5. To the extent we try to abandon the pursuit of our own pleasure, we fail to honor God and love people. Or, to put it positively: the pursuit of pleasure is a necessary part of all worship and virtue. That is, The chief end of man is to glorify God by enjoying him forever.

Christian Leadership: Broadly speaking, a person is more or less a Christian leader as that person exerts more or less Christian influence in Christian ways. Or to put it another way, to the degree that you shape others toward the image of Christ you are a Christian leader.

Christian Love: Finding one’s own joy in actively working for the joy of another, even at the self-sacrificial cost of one’s own private pleasure, all for the glory of God.

Covetousness: Desiring something so much that you lose your contentment in God.

Envy: A mingling of a desire for something with the resentment that another is enjoying it and you are not.

Faith: Hebrews 11:1 is the closest thing we have to definition of faith in all the New Testament, I think: Now faith is the assurance of things hoped for, the conviction of things not seen.

Glory of God: The infinite beauty and greatness of His manifold perfections.

Freedom: You are fully free—completely free, free indeed—when you have the desire, the ability, and the opportunity to do what will make you happy in a thousand years. Or we could say, You are fully free when you have the desire, the ability, and the opportunity to do what will leave you no regrets forever.

God’s righteousness: His unwavering commitment to uphold and display the greatness of his glory and the honor of his name.

Headship: The divine calling of a husband to take primary responsibility for Christ-like servant leadership, protection, and provision in the home.

Hope (Three senses): 1. a desire for something good in the future,
2. the thing in the future that we desire, and
3.the basis reason for thinking that our desire may indeed be fulfilled.

Idolatry: Valuing any thing or any person more than the one true God. An idol is any thing or any person that takes center stage in our affections

imago Dei: That in man which constitutes him as he-whom-God-loves.

Imputation: The act in which God counts sinners to be righteousness through their faith in Christ on the basis of Christ’s perfect “blood and righteousness,” specifically the righteousness that Christ accomplished by his perfect obedience in life and death.

Infinite: Something that can give away forever and never get smaller. Infinite gives and gives and gives and never becomes less.

Legalism: (1) Treating biblical standards of conduct as regulations to be kept by our own power in order to earn God’s favor. . . .
(2): The erecting of specific requirements of conduct beyond the teaching of Scripture and making adherence to them the means by which a person is qualified for full participation in the local family of God, the church; This is where unbiblical exclusivism arises.

Love: Love is the overflow of joy in God that meet the needs of others. Or: The grace-enabled impulse to increase your joy by seeing it expand into other people.

Lust: Sexual desire that dishonors its object and disregards God.

MATURE FEMININITY: A FREEING DISPOSITION TO AFFIRM, RECEIVE AND NURTURE STRENGTH AND LEADERSHIP FROM WORTHY MEN IN WAYS APPROPRIATE TO A WOMAN’S DIFFERING RELATIONSHIPS.

MATURE MASCULINITY: A SENSE OF BENEVOLENT RESPONSIBILITY TO LEAD, PROVIDE FOR AND PROTECT WOMEN IN WAYS APPROPRIATE TO A MAN’S DIFFERING RELATIONSHIPS.

New Self: The self that looks to Christ as its Savior and Lord and Treasure and Joy and Satisfaction.

Prayer: Asking God for things.

Racism: Racism is an explicit or implicit belief or practice that qualitatively distinguishes or values one race over other races.

Reason: The faculty by which one consciously sustains a process of “identifying one’s impressions in conceptual terms, of integrating every event and every observation into a conceptual context, of grasping relationships, differences, similarities in one’s perceptual material and of abstracting them into new concepts, of drawing interferences, of making deductions, of reaching conclusions …” (Ayn Rand, “The Objectivist Ethics,” p. 20).

Relativism: Belief in one of these four things-
1) There is no objective, external standard for measuring the truth or falsehood of a factual statement (like “John MacArthur is tall.)” Or
2) there may be an external standard, but we can’t know if there is. Or
3) there may be one, but no one can figure out what it means, so it can’t function as a standard. Or
4) there may be an external, objective standard, but I don’t care what it is; I’m not going to base my convictions on it.

Risk: An action that exposes you to the possibility of loss or injury.

Sexism: An explicit or implicit belief or practice that qualitatively distinguishes or values one sex over the other.

Shame (dictionary definition): The painful emotion caused by a consciousness of guilt or shortcoming or impropriety.

Sin: Lawlessness. In other words sin is man’s refusal to submit to God’s law, that is, God’s Word. It is insubordination.

Spiritual Gifts: Abilities by which we receive the grace of God and disburse that grace to others.

Submission: The divine calling of a wife to honor and affirm her husband’s leadership and help carry it through according to her gifts.

Sustaining Grace: Not grace to bar what is not bliss, nor flight from all distress, but this: The grace that orders our trouble and pain, and then, in the darkness, is there to sustain.

The Church (Local): A group of baptized believers who meet regularly to worship God through Jesus Christ, to be exhorted from the Word of God, and to celebrate the Lord’s Supper under the guidance of duly appointed leaders.

The Flesh: The closest thing to a Biblical definition of the flesh is Romans 8:7-8, “The mind that is set on the flesh is hostile to God; it does not submit to God’s law, indeed it cannot; and those who are in the flesh cannot please God.”

The Love of God: His doing whatever needs to be done, at whatever cost, so that we will see and be satisfied with the glory of God in Jesus Christ.

The Occult: Anything that involves dealings with the world of spirits or of supra-normal forces which (dealings) are not oriented on Jesus as he is revealed in the Bible.

The Wrath of God: God’s settled anger toward sin expressed in the repayment of suitable vengeance on the guilty sinner.

Urban ministry: The effort in the name of Christ,by the strength of Christ, for the glory of Christ, to waken in people of all ethnic groups transforming faith in Christ and the fruit of obedience to Christ, by proclaiming Christ in the gospel and by showing Christ in acts of practical, persevering, sacrificial, courageous, liberating, stabilizing, burden-lifting, productivity-enhancing, family-strengthening, community-building, Christ-celebrating love, in the face of the peculiar concentration of pain and poverty and sin and brokenness and dysfunction that all come together in the urban centers of the world, including the Twin Cities.

Wisdom (1): The ability of the soul to perceive God-glorifying, Christ-exalting, gospel-fashioned, people-helping ways to live, with the knowledge God gives us – not only the ability to memorize specific biblical rules of behavior.

Wisdom (2): Knowing what the greatest goal is in any situation, and what the best way is to achieve it.

Wisdom of the World: The use of the human mind to achieve and maintain a ground for boasting before God and man.