Ruth 3:18, "Then
said she, Sit still, my daughter
until thou know how the matter
will fall: for the man
will not be in rest, until he
have finished the thing
Now, He is sitting at the right hand of the throne of God. The fact that He sits is evidence to us that He has fulfilled and accomplished what He came to do. Because He lives, we live also. Because He has rested from His work (of eternal salvation), we can rest also. He tells us that He will give us rest by doing work. If we take His yoke upon us, He will give us rest. That seems curious until one realizes that He is talking about timely vs. eternal things. When one labours in the Lord's vineyard to add virtue, knowledge, temperance, brotherly kindness, and charity to their faith, it is a burden and sweet labour of love.
However, it is a great rest to the child of God to know that Jesus Christ FINISHED the work of redemption for us, and we have no work to do for ourselves or others to somehow attain heaven and immortal glory. Oh what a rest that is to have! Because He has rested and is sitting from that work, we have been made to sit with Him in heavenly places. Thank Him that He did not rest until He had done all things for us. Speed that blessed day when He tells the Father, "Behold I and the children which God hath given me." (Hebrews 2:13)