In 2 Peter 2:5 you see a reference to those who are willingly ignorant. Many of the attacks here on Calvinism are closer to a willing ignorance expressed with belligerence, and in such a manner one questions if they come from a 'born again' person.
The following is from A. A. Hodge’s Outlines of Theology, and it was used by Charles H. Spurgeon in his school for the young preachers. As in any Calvinistic Systematic theology textbook, a scripture basis of the doctrines is given. Hodge was a Presbyterian and Spurgeon was a Baptist.
3. Prove that repentance is a grace or gift of God.
1st. This is evident from the nature of repentance itself. It includes, (1) sense of the hatefulness of sin, (2) sense of the beauty of holiness, (3) apprehension of the mercy of God in Christ. It, therefore, presupposes faith, which is God’s gift. Galatians 5:22; Ephesians 2:8.
2nd. The Scriptures expressly affirm it.—Zechariah 12:10; Acts 5:31; 11:18; 2 Timothy 2:25.
These are the full texts of the verses listed above.
But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith, (Gal 5:22, KJV)
For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: (Eph 2:8, KJV
And I will pour upon the house of David, and upon the inhabitants of Jerusalem, the spirit of grace and of supplications: and they shall look upon me whom they have pierced, and they shall mourn for him, as one mourneth for his only son, and shall be in bitterness for him, as one that is in bitterness for his firstborn. (Zech 12:10, KJV)
Him hath God exalted with his right hand to be a Prince and a Saviour, for to give repentance to Israel, and forgiveness of sins. (Acts 5:31, KJV)
When they heard these things, they held their peace, and glorified God, saying, Then hath God also to the Gentiles granted repentance unto life. (Acts 11:18, KJV)
In meekness instructing those that oppose themselves; if God peradventure will give them repentance to the acknowledging of the truth; (2Tim 2:25, KJV)
Outlines of Theology
This theology textbook is easy to navigate, just click on the topic in the Table of Contents.