What does it mean to ‘abide forever’?  This is talking about living in eternity in bliss and joy, in the center of eternal glory with a holy God and Savior.  There is no sin, sickness, suffering, or misery of any kind with the Lord.  Death will be unknown.

Surely the righteous will never be shaken; they will be remembered forever.  (Ps 112:6 NIV)

The righteous will never be upset or knocked off balance, spiritually, because they cling to this promise and it strengthens them.  Righteous people will be remembered forever.

The mentioning of the righteous is a blessing, but the name of the wicked will rot.  (Pro 10:7 NASB)

Remembering the life of a righteous person is a blessing.

Throw your burden upon the Lord, and he will sustain you.  He will never allow the godly to be shaken.  (Ps 55:22 NET)

When we rely upon the Lord, He will support and uphold us.  He will not allow us to be surprised because He knows how to warn us and to prepare us for difficult battles ahead. 

And our faithfulness to Him and to His Word will be repaid by untold blessings.  Glory to God!