This gate of the LORD, into which the righteous shall enter. This (supply, is the) gate of the Lord, into which the righteous shall enter - to "praise the Lord" (Psalms 118:19). Christ, "the King of glory," first comes in through the "everlasting doors" of the heavenly city, to make the way for us also to enter (Psalms 24:7). Compare the 'Te Deum' hymn of Ambrose, 'When thou hadst overcome the sharpness of death, thou didst open the kingdom of heaven to all believers.'
Related Commentaries of Psalms 118:20
Psalms 118:20
20 This gate of the LORD, into which the righteous shall enter.