Colossians 1:23

23 provided that you continue securely established and steadfast in the faith, without shifting from the hope promised by the gospel that you heard, which has been proclaimed to every creature under heaven. I, Paul, became a servant of this gospel.

Colossians 1:23 In-Context

21 And you who were once estranged and hostile in mind, doing evil deeds,
22 he has now reconciled in his fleshly body through death, so as to present you holy and blameless and irreproachable before him—
23 provided that you continue securely established and steadfast in the faith, without shifting from the hope promised by the gospel that you heard, which has been proclaimed to every creature under heaven. I, Paul, became a servant of this gospel.
24 I am now rejoicing in my sufferings for your sake, and in my flesh I am completing what is lacking in Christ's afflictions for the sake of his body, that is, the church.
25 I became its servant according to God's commission that was given to me for you, to make the word of God fully known,
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.