How are they that receive the sacrament of the Lord’s supper to prepare themselves before they come unto it?

#WLC171

They that receive the sacrament of the Lord’s supper are, before they come, to prepare themselves thereunto, by examining themselves of their being in Christ, of their sins and wants; of the truth and measure of their knowledge, faith, repentance; love to God and the brethren, charity to all men, forgiving those that have done them wrong; of their desires after Christ, and of their new obedience; and by renewing the exercise of these graces, by serious meditation, and fervent prayer.

Proofs

They that receive the sacrament of the Lord’s supper are, before they come, to prepare themselves thereunto, by examining themselves (1 Corinthians 11:28)
of their being in Christ, (2 Corinthians 13:5)
of their sins and wants; (1 Corinthians 5:7; Exodus 12:15)
of the truth and measure of their knowledge, (1 Corinthians 11:29)
faith, (1 Corinthians 13:5)
repentance; (Zechariah 12:10; 1 Corinthians 11:31)
love to God and the brethren, (1 Corinthians 10:16–17; Acts 2:46–47)
charity to all men, (1 Corinthians 5:8; 11:18, 20)
forgiving those that have done them wrong; (Matthew 5:23–24)
of their desires after Christ, (Isaiah 55)
and of their new obedience; (1 Corinthians 5:7–8)
and by renewing the exercise of these graces, (1 Corinthians 11:25–26, 28; Hebrews 10:21–22, 24; Psalm 26:6)
by serious meditation, (1 Corinthians 11:24–25)
and fervent prayer. (2 Chronicles 30:18–19; Matthew 26:26)