'Writing' in the Bible

I hope to come to you soon. However, I'm writing this to you

But if I am delayed, [I am writing] in order that you may know how one must conduct oneself in the household of God, which is the church of the living God, the pillar and mainstay of the truth.

for the Writing saith, 'An ox treading out thou shalt not muzzle,' and 'Worthy is the workman of his reward.'