Gr. telos. In vs. 6, 14“end” is again from telos but in v. 3, from sunteleia, It is not clear whether Christ means “to the limit of endurance” (see 1 Cor. 10:13; Heb. 12:4), or “to the end of the world” (see on Matt. 24:3, 6).
He that shall endure.
That is, endure the various temptations to apostasy such as the deceptions of the false prophets (v. 11) and the lure of iniquity (v. 12).