John Piper wrote,
"A Christian is not a person who believes in his head the teachings of the Bible. Satan believes in his head the teachings of the Bible! A Christian is a person who has died with Christ, whose stiff neck has been broken, whose brazen forehead has been shattered, whose stony heart has been crushed, whose pride has been slain, and whose life is now mastered by Jesus Christ."
Robert M. McCheyne wrote,
"The Christian is a person who makes it easy for others to believe in God."
A.W. Tozer wrote,
On saving faith the London Baptist Confession of Faith of 1689 reads,True spirituality manifests itself in certain dominant desires.1. First is the desire to be holy rather than happy.2. A man may be considered spiritual when he wants to see the honor of God advanced through his life even if it means that he himself must suffer temporary dishonor or loss.3. The spiritual man wants to carry his cross.4. Again, a Christian is spiritual when he sees everything from God's viewpoint.5. Another desire of the spiritual man is to die right rather than to live wrong.6. The desire to see others advance at his expense.7. The spiritual man habitually makes eternity-judgments instead of time-judgments.
2._____ By this faith a Christian believeth to be true whatsoever is revealed in the Word for the authority of God himself, and also apprehendeth an excellency therein above all other writings and all things in the world, as it bears forth the glory of God in his attributes, the excellency of Christ in his nature and offices, and the power and fullness of the Holy Spirit in his workings and operations: and so is enabled to cast his soul upon the truth thus believed; and also acteth differently upon that which each particular passage thereof containeth; yielding obedience to the commands, trembling at the threatenings, and embracing the promises of God for this life and that which is to come; but the principal acts of saving faith have immediate relation to Christ, accepting, receiving, and resting upon him alone for justification, sanctification, and eternal life, by virtue of the covenant of grace. ( Acts 24:14; Psalms 27:7-10; Psalms 119:72; 2 Timothy 1:12; John 14:14; Isaiah 66:2; Hebrews 11:13; John 1:12; Acts 16:31; Galatians 2:20; Acts 15:11 )