What does Deuteronomy 26:14 mean?

‘I haven’t eaten any of it while I was grieving, or used any of it for something unclean, or offered any of it for the dead. I’ve listened to you, Lord, and done everything you asked.’ Deuteronomy 26:14 - Modern Text Bible

(This verse stresses that the tithe was handled respectfully and according to God’s instructions, not misused or treated carelessly.)