"For God is not unrighteous, so as to forget your work and the labor of love which you showed toward his name, in that you served the saints, and still do serve them." Hebrews 6:10 WEB
When others appear to have forgotten the good things you have done for them, God will never forget. He will always repay blessing with blessing.
"with good will doing service, as to the Lord, and not to men;" Ephesians 6:7 WEB