One privilege you have in planning worship services is the opportunity to mix and match songs. Colossians 3:16 tells us to teach each other with psalms, hymns, and spiritual songs. Giving attention to the flow of thought from one song to the next facilitates this kind of teaching.
There are many ways to apply this principle. One effective way to drive a truth home is to put two songs with parallel themes together, the second one building upon the first.