2 Samuel 19:38
And the king answered, Chimham shall go over with me, and I will do to him that which shall seem good unto thee: and whatsoever thou shalt require of me, that will I do for thee. And the king answered, Chimham shall go over with me, and I will do to him that which shall seem good unto thee: and whatsoever thou shalt require of me, that will I do for thee.
This verse belongs to the closing history of David's reign, in the part telling of Absalom's rebellion and death and of David's lament and victory and return to Jerusalem. The exchange takes place as David returns in triumph after Absalom's rebellion, with Barzillai escorting him toward the city and toward Jerusalem. Chimham, whose name means longing, was a friend of David. The verse shows David responding generously to Barzillai's loyal service by agreeing that Chimham will go over and accompany him and by promising to do and to grant whatever Barzillai requests and requires. In this Barzillai stands as a loyal figure among biblical examples of courage and service.
The verse also shows David continuing his kindness to Saul's household by agreeing to take Chimham with him and to grant Barzillai whatever he requested.
The verse shows Barzillai in old age as unfit through infirmity for the entertainments of the courts of earthly princes, yet still able to relish the pleasures of God's courts. Old servants of God are not dismissed from waiting on Him nor cast off in time of old age and must not desert His service. When they can no longer be working servants they may still be waiting servants, waiting to give honor to Him and to receive comfort from Him till they inherit the promise.