Cadence is the core tension in music theory. The most common one is called the authentic cadence - between V and I degrees of the scale. In blues however the cadence of IV to I is more typical.

Fun part is that IV to I is also called “Amen” candence, for its frequent use for “Amen” in hymns.

https://en.wikipedia.org/wiki/Cadence#Plagal_cadence