It's just words until the Holy Spirit moves

1 Thessalonians 1:4-5 (New International Version)

 ⁴For we know, brothers loved by God, that he has chosen you, ⁵because our gospel came to you not simply with words, but also with power, with the Holy Spirit and with deep conviction. You know how we lived among you for your sake.
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Ponder this: God's children receive the preaching of the Gospel as more than just words. Those words have a power over them and the Holy Spirit convicts them and makes them want to imitate the life of Christ and other Christ-like believers. For those who are not ready to be harvested, the Gospel will just be words. Preach to everyone for it is not by your strength or power that they will be saved, but by the power of God and His Holy Spirit that they will be convicted and drawn to repentance.