Bible Verses About Intercessory Prayer: Commanded

I exhort, then, first of all, there be made supplications, prayers, intercessions, thanksgivings, for all men:

is any infirm among you? let him call for the elders of the assembly, and let them pray over him, having anointed him with oil, in the name of the Lord,

Be confessing to one another the trespasses, and be praying for one another, that ye may be healed; very strong is a working supplication of a righteous man;