Your calling is to be faithful to God where you are, and in doing this all work is sacred, spiritual, and worthy of your full attention and energy. When you get to work, you are not entering a secular environment as much as you are bringing the sacred into the world by following Christ wherever you are.
Faith, Work, Calling
Keep yourselves from idols." The warning isn't given to them because it wasn't a real danger or because there was an off chance someone might fall into idolatry. It was given because this is our root problem on any given day. It is what we, especially as followers of Jesus, must fight against.
Faith, Sin
The deepness and consistency of your repenting will have a direct impact on the liveliness of your faith and the brightness of your confidence. This is not because you repent so well, but because in repenting you know the darkness and trouble of your own sin, and the great work of grace in Jesus that overcomes it all.
Faith, Sin, Grace