'Unnecessary' in the Bible

Give no [unnecessary] sleep to your eyes,Nor slumber to your eyelids;

In that day you will ask in My name, and I am not saying to you that I will ask the Father on your behalf [because it will be unnecessary];

Therefore, since we are surrounded by so great a cloud of witnesses [who by faith have testified to the truth of God’s absolute faithfulness], stripping off every unnecessary weight and the sin which so easily and cleverly entangles us, let us run with endurance and active persistence the race that is set before us,