God rewards our efforts. He rewards our work. He sees it, and He credits it to our account. He is thankful for the work we have done, and He demonstrates it by the rewards that He gives to those who work and serve Him. He's not unrighteous. He's a righteous God, and when you work and serve Him, He remembers it. He won't forget it. There's a reward that comes from diligently serving God.
For God is not unrighteous to forget your work and labour of love, which ye have shewed toward his name, in that ye have ministered to the saints, and do minister. And we desire that every one of you do shew the same diligence to the full assurance of hope unto the end: That ye be not slothful, but followers of them who through faith and patience inherit the promises.
Hebrews 6:10-12
Let's keep on keeping on with God