13:5 Examine . . . Test. See 1 Cor. 11:28; Gal. 6:4. Paul’s words help clarify the doctrine of assurance of faith. Paul asks the Corinthians to examine their own lives for evidence of salvation. Such evidence would include trust in Christ (Heb. 3:6), obedience to God (Matt. 7:21), growth in holiness (Heb. 12:14; 1 John 3:3), the fruit of the Spirit (Gal. 5:22, 23), love for other Christians (1 John 3:14), positive influence on others (Matt. 5:16), adhering to the apostolic teaching (1 John 4:2), and the testimony of the Holy Spirit within them (Rom. 8:15, 16).