Oaths, honesty, and multiple levels of truth.

Matthew 5.33-37.

Switching topics from divorce, Jesus next moves on in his Sermon on the Mount, to oaths. (Which isn’t entirely unrelated to oaths, ’cause y’know, marriage oaths.) This passage doesn’t have a parallel in the other gospels; it’s unique to Matthew.

Matthew 5.33-37 KWL

33“Again, you² hear the oldtimers say this:

‘You¹ will not perjure,’ Lv 19.2

and you¹ will give your¹ oaths to the Lord’?

34I tell you:²

Don’t swear altogether.

And not by heaven,

because it’s ‘God’s throne.’ Ps 11.4

35Nor by earth,

because it’s ‘the footstool of his feet.’ Is 66.1

Nor by Jerusalem,

because it’s ‘the mighty king’s city.’ Ps 48.2

36Nor ought you¹ swear by your¹ head,

because you’re¹ not able to make one hair

white or black.

37Make your² words ‘Yes yes, no no.’

Anything more than this is evil.”

Verse 33 is a little tricky, because the two things Jesus quotes “the oldtimers” as saying, consist of a bible quote, and a non-bible quote. And the bible quote isn’t a precise bible quote. Doesn’t bluntly, briefly say “Thou shalt not perjure,” in the scriptures. It’s a bit longer:

Leviticus 19.11-12 Schocken Bible

11You are not to steal,

you are not to lie,

you are not to deal-falsely, each-man with his fellow!

12You are not to swear by my name falsely,

thus profaning the name of your God—

I am YHWH!

Likewise verses which back up this idea:

Numbers 30.3 Schocken Bible

[Any] man who vows a vow to YHWH

or swears a sworn-oath, to bind himself by a binding-obligation:

he is not to desecrate his word;

exactly as what goes out of his mouth, he is to do.

Deuteronomy 23.22-24 Schocken Bible

22When you vow a vow to YHWH your God,

you are not to delay paying it,

for YHWH your God will require, yes, require it of you,

and it shall be [considered] a sin in you.

23But if you hold back from vowing,

it shall not be [considered] a sin in you.

24What issues from your lips, you are to keep,

and you are to do

as you vowed to YHWH your God, willingly,

as you promised with your mouth.

Swearing to God was a big deal. Still is a big deal. It’s why judges and courtrooms, despite separation of church and state, still tack “So help me God” to the end of oaths—it’s optional, but it’s gonna get religious people to take it seriously, and hypocrites to pretend to take it seriously. When we take the LORD’s name in vain, and break our oaths, or never meant to follow ’em to begin with, it’s sin.

But Jesus takes it one step further: Don’t swear, because you shouldn’t have to swear: Aren’t you always honest? Don’t you always tell the truth? Or are you—like a politician who lies the rest of the time, but never wants to suffer the consequences of perjury—only truthful when you’re under oath? How does that sort of behavior make you a God-follower?

Plus Jesus punctures all the other things people of his day swore by. I’ll get to those.