The Psalm 136 you quoted, "Give thanks to the Lord, for he is good.
His faithful love endures forever.
Give thanks to the God of gods.
His faithful love endures forever....." is about God's Love which endures forever. I believe God's Grace and God's Love are two different things. God's Love does not have an end, but His grace for a particular situation is for a period. For example in the days of Noah, God gave a period of 120 years for man to repent of his ways, but none repented, and God brought down the flood upon the earth as His judgement (Genesis 6). The verse 3 NKJV says, "My Spirit shall not strive with man forever, for he is indeed flesh; yet his days shall be one hundred and twenty years." After God's Grace has been taken for granted, REMEMBER, JUDGEMENT DAY IS COMING.
The Psalm 136 you quoted, "Give thanks to the Lord, for he is good.
His faithful love endures forever.
Give thanks to the God of gods.
His faithful love endures forever....." is about God's Love which endures forever. I believe God's Grace and God's Love are two different things. God's Love does not have an end, but His grace for a particular situation is for a period. For example in the days of Noah, God gave a period of 120 years for man to repent of his ways, but none repented, and God brought down the flood upon the earth as His judgement (Genesis 6). The verse 3 NKJV says, "My Spirit shall not strive with man forever, for he is indeed flesh; yet his days shall be one hundred and twenty years." After God's Grace has been taken for granted, REMEMBER, JUDGEMENT DAY IS COMING.