Colossians 4:3

Overview - Colossians 4
He exhorts them to be fervent in prayer;
to walk wisely toward them that are not yet come to the true knowledge of Christ.
10 He salutes them, and wishes them all prosperity.
Treasury of Scripture Knowledge

Colossians 4:3  (King James Version)
Withal praying also for us, that God would open unto us a door of utterance, to speak the mystery of Christ, for which I am also in bonds:
 


praying
Romans 15:30-32 ; Ephesians 6:19 ; Philippians 1:19 ; 1 Thessalonians 5:25 ; Philemon 1:22 ; Hebrews 13:18 Hebrews 13:19

that
1 Corinthians 16:9 ; 2 Corinthians 2:12 ; 2 Thessalonians 3:1 2 Thessalonians 3:2 ; Revelation 3:7 Revelation 3:8

a door
The term door is used metaphorically for an entrance to any business, or occasion or opportunity of doing any thing; and consequently "a door of utterance" is an opportunity of preaching the gospel successfully
See the parallel texts.

the mystery
1:26 Colossians 2:2 Colossians 2:3 Matthew 13:11 ; 1 Corinthians 4:1 ; Ephesians 6:19

for
Ephesians 3:1 ; 4:1 6:20 Philippians 1:7 Philippians 1:13 Philippians 1:14 ; 2 Timothy 1:16 ; 2:9