Here "eagerly wait" means to expect fully; assiduously and patiently wait for.  We look forward to being before Jesus Christ - changed to be like Him, apart finally from sin!  He has the power to do this, just as to put all under His control as God and man.  I am a citizen of that heavenly country, born from above into it forever...

Philippians 3:20-21

For our citizenship is in heaven, from which we also eagerly wait for the Savior, the Lord Jesus Christ, 21 who will transform our lowly body that it may be conformed to His glorious body, according to the working by which He is able even to subdue all things to Himself.