He who sacrifices thank offerings honors me,To offer thank offerings is to offer thanks or praise. It is to bring glory and honor to God. This is the essence of the role of man, to glorify God. I believe that this is what this verse is saying: The way of salvation is to Glorify God.
and he prepares the way
so that I may show him the salvation of God.
If you go back through this entire passage, you will see that there were people who were offering sacrifices to God, but they were worthless to Him. God is seeking worshippers who will worship in spirit and in truth. He is not seeking people who simply are doing their duty. The duties must be from the heart. The duty itself is worthless, it is only when it is done in true worship that God is pleased and salvation is present.