Bible Verses About Intercessory Prayer: Commanded

I desire therefore, first of all, that supplications, prayers, intercessions and thanksgivings be made for all men:

Is any man sick among you? Let him bring in the priests of the church and let them pray over him, anointing him with oil in the name of the Lord.

Confess therefore your sins one to another: and pray one for another, that you may be saved. For the continual prayer of a just man availeth much.