Our middle Daughter just told us that we are the only couple out of
all of her friends parents, etc., that has stayed in their first marriage.
All of the others have been married and remarried at least one time,
with step children. It's almost unheard of to stay married to the
same person forever, these days.
I believe couples who only marry once, and stay together, raise kids that only marry once and stay together. My parents were always only just married the one time, and same thing for dh. Dh and I are both middle kids of five. Out of the 10 children in the two families, only one ever divorced. I think that says a lot for the carrying power of a strong marriage. It sets an example for the children in the family.....that staying married can be done, and that it's well worth it.
I think it takes waiting for the person God has for you, and then -- when times get tough, as they surely will -- remembering your covenant, with your spouse and with God. As quoted above, scripture says, "A cord of three strands is not easily broken." Jesus is the third strand.
IF you are willing & obedient , you shall eat the good of the land: But if you refuse & rebel, You shall be devoured with the sword: for the mouth of the LORD hath spoken it. Isaiah 1:19, 20