1 Samuel 14:35

And Saul built an altar unto the Lord: the same was the first altar that he built unto the Lord.

Cross-references

In 1 Samuel 7:17, Samuel also builds an altar to the LORD — a direct parallel to Saul's first altar, showing a shared practice of worship.

Exodus 32:5 Contrast

In Exodus 32:5, Aaron builds an altar for the golden calf — a stark contrast to Saul's altar built for the true God.