Liberty answers the question, Can I?

(1 Corinthians 10:23 KJV) “All things are lawful for me, but all things are not expedient: all things are lawful for me, but all things edify not.”

Grace answers the question, Should I?

(Titus 2:11–12 KJV) “11 For the grace of God that bringeth salvation hath appeared to all men, 12 Teaching us that, denying ungodliness and worldly lusts, we should live soberly, righteously, and godly, in this present world;”

The Spirit should answer the question, Will I?

(Romans 8:14; Galatians 5:18 KJV) “14 For as many as are led by the Spirit of God, they are the sons of God. 18 But if ye be led of the Spirit, ye are not under the law.”
(Philippians 2:13 KJV) “For it is God which worketh in you both to will and to do of his good pleasure.”