You don't have to be religious to be curious about this, and you don't have to agree with a word of it to read it fairly. Here's what the Bible actually says about marriage, without the parts people tack on that aren't in the text.
It starts as a solution to loneliness
The first thing the Bible says is bad, in the second chapter of Genesis, is "it is not good for the man to be alone." Marriage shows up as the answer to that specific problem. Not as a reward for good behavior, not as a business arrangement, but as companionship. Whatever else marriage becomes in the rest of the Bible, it starts here: two people who were not meant to do life by themselves.
"Leaving and cleaving"
Genesis 2:24 says a man will leave his father and mother and be joined to his wife, and the two become one flesh. That's the oldest marriage language in the Bible, and it's doing two things at once. Leaving means a new family unit takes priority over the families you came from, including in the small daily decisions. Cleaving, an old word for holding fast, means the joining isn't casual. It's a permanent reorientation of your life around another person.
Covenant, not contract
A contract is an exchange: you do this, I do that, and if either of us stops holding up our end, the deal is off. A covenant is a promise that doesn't depend on the other person's performance. The marriage language throughout the Bible, especially the comparison to God's own faithfulness to His people even when they weren't faithful back, treats marriage as the second kind, not the first. That's a demanding standard. It's also the reason marriage can survive seasons where one or both people are, honestly, not easy to love.
1 Corinthians 13, without the wedding readings
Everyone's heard "love is patient, love is kind" at a wedding. Read in context, Paul wasn't writing a wedding toast. He was correcting a church that had plenty of impressive gifts and not much actual love, and the definition he gives is almost entirely about behavior under pressure. Patient. Not easily angered. Keeps no record of wrongs. That list reads less like poetry and more like a job description for what marriage actually asks of you on a Tuesday.
Ephesians 5, and what it's usually missing
This is the passage people know for "wives, submit to your husbands," and it's frequently quoted stopping exactly there. The next line is the harder one: husbands, love your wives the way Christ loved the church, which the text describes a few verses later as giving Himself up for her. Whatever you make of the first instruction, the second one is not a small ask. It's a call to a kind of self-giving that most people find much harder than being led.
What this means if you're not religious
You can build a strong marriage without any of this. Plenty of people do. But if you're marrying someone who holds these convictions, or if you're simply curious what your officiant actually believes about the thing he's about to pronounce you into, this is it in plain terms: marriage as companionship rather than performance, as a promise that outlasts convenience, and as a call to love that costs something. You don't have to sign on to any of it to have a good marriage. It's just worth knowing what's actually in the book, rather than the version that gets summarized in a wedding toast.
Written by Matt Perry, wedding officiant and Lead Pastor of Love Church San Diego.