1 Thessalonians 4:2

Here our apostle subjoins. reason, to enforce his foregoing exhortation; what he now required of them, was nothing but what at their first conversion to Christianity he had commanded them, and that in the name, and by the authority of Jesus Christ, to be performed by them; so that they were not his commands, but Christ's by him, and, as such, to be esteemed of them.

Learn hence, that the instructions and rules for. holy life, laid down by the apostles before the churches, are to be looked upon as the commandments of Christ, as being dictated by his Spirit, and delivered by his authority, and as such to be received of them, and obeyed by them.