1. Gospel preaching is unavoidable our job. (1 Co 9:16)
    Jer 20:9, Rom 1:14,

We cannot endure unless we preach the gospel. (1 Cor 9:16, Jer 20:9)

1 Cor 9:16 For though I preach the gospel, I have nothing to glory of: for necessity is laid upon me; yea, woe is unto me, if I preach not the gospel!

Jer 20:9 Then I said, I will not make mention of him, nor speak any more in his name. But his word was in mine heart as a burning fire shut up in my bones, and I was weary with forbearing, and I could not stay.

Also, we are indebted to the gospel. (Rom 1:14)

Rom 1:14 I am debtor both to the Greeks, and to the Barbarians; both to the wise, and to the unwise.