An idle Christian is a contradiction. Noah was not idle, but when the Lord spoke, Noah moved, “By faith Noah, being divinely warned of things not yet seen, moved with godly fear, prepared an ark for the saving of his household, by which he condemned the world and became heir of the righteousness which is according to faith” (Hebrews 11:7).
The Lord blessed Noah by saving him from the massive worldwide catastrophe of the Flood.
The Lord will bless you, if you do what He says. It is just that simple.