'Themselves' in the Bible

Or know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with men,

Now I beseech you, brethren (ye know the house of Stephanas, that it is the firstfruits of Achaia, and that they have set themselves to minister unto the saints),