With all your might Reference Page

Whatever your hand findth to do, do it with all your might.
Reference: Ecclesiastes 9:10 Whatever your hand finds to do, do it with all your might; for there is no activity or planning or knowledge or wisdom in Sheol where you are going.

Put your whole heart into each task.
Reference: Deuteronomy 4:29 "But from there you will seek the LORD your God, and you will find Him if you search for Him with all your heart and all your soul.

Do not do anything half heartedly.
Reference: Colossians 3:23 Whatever you do, do your work heartily, as for the Lord rather than for men

Neither God nor man is pleased by work done for them, by another, in a half hearted fashion.
Reference: Ephesians 6:6 not by way of eyeservice, as men-pleasers, but as slaves of Christ, doing the will of God from the heart.

God looks at the heart.
Reference: 1 Samuel 16:7 But the LORD said to Samuel, "Do not look at his appearance or at the height of his stature, because I have rejected him; for God sees not as man sees, for man looks at the outward appearance, but the LORD looks at the heart."

A zealous heart in an unbeliever, is more pleasing to god, then the half hearted effort of a believer.
Reference: Galatians 6:9 Let us not lose heart in doing good, for in due time we will reap if we do not grow weary.

This is what is meant by the saying, I wish you were hot or cold.
Reference: Revelation 3:15 'I know your deeds, that you are neither cold nor hot; I wish that you were cold or hot.

But because you are lukewarm, I will spew you out of My Mouth.
Reference: Revelation 3:16 'So because you are lukewarm, and neither hot nor cold, I will spit you out of My mouth.