"The Spirit and the bride say, 'Come.' And let the one who hears say, 'Come.' And let the one who is thirsty come; let the one who wishes take the water of life without cost" (Rev. 22:17).
This is an invitation for salvation that has been extended by Christ. It is for all who need the water of life. This means that it is for all, for "all have sinned and fall short of the glory of God" (Rom. 3:23) and "the wages of sin is death" (Rom. 6:23). All who wish to obtain the gift of salvation and be saved from their sins may come.
There are three entities mentioned that help extend the message of salvation. The Spirit -- who revealed the message to the apostles (Jn. 16:13), which we have recorded in the Bible. The bride -- the church of Christ (Eph. 5:24,31-32). And the one who hears -- those who have believed and obeyed the message of salvation.
Let us use the word, the church, and our own individual lives to help extend the Lord's invitation to a lost world.