Noah and Preaching through Work

II Peter 2:5 reads:

"and if he did not spare the ancient world, but did protect Noah, a herald of
righteousness, along with seven others, when God brought a flood on an ungodly world, "

Look at Genesis 6 and 7. Noah was building an Arc. There is nothing about
him going around being a herald or preaching repentance. Most commentaries point
out it was Noah's obedience to God's command was the preaching. Genesis 6:30
reads "And Noah did all that God commanded him – he did indeed." Noah worked on building a gigantic ark for 120 years. It wasn't close to the water. His evil neighbors witnessed this
folly. Noah worked as a carpenter. He wasn't "in" the ministry. He wasn't a doctor. He wasn't a professional preacher. He simply built an ark. God tells us in Ephesians 6

"6:5 Slaves,9 obey your human masters with fear and trembling, in the sincerity of your heart as to Christ, 6:6 not like those who do their work only when someone is
watching11 – as people-pleasers – but as slaves of Christ doing the
will of God from the heart.12 6:7 Obey with enthusiasm, as though serving the Lord
and not people, 6:8 because you know that each person, whether slave or free, if he does something good, this will be rewarded by the Lord. that the master we serve at work is Christ."

When we are at work we are obeying God or should be obeying God. If we work as God wants us to work, working to please Christ by working hard, lovingly and honestly, we too will be heralds to a fallen world without uttering word.