A brief passage here, taken out of context of a larger narrative in Isaiah 46 in which pagan gods are mocked for being empty and powerless statues, dependent on human beings to carry them from place to place.
God, however, carries us. And while the prophet is using the metaphor of age to describe the chosen people, the image is fitting for the whole span of a human life:
Hear me, O house of Jacob,
all who remain of the house of Israel,
My burden since your birth,
whom I have carried from your infancy.
Even to your old age I am the same,
even when your hair is gray I will bear you;
It is I who have done this,
I who will continue,
and I who will carry you to safety.
A good, compact reading for a person who has lived to a full old age. God is constant. God carries us, shoulders us as burdens. At the end of our days, God continues this affection, carrying us to a final safety, in the Eternal Kingdom.
This reading forms a harmonization with Matthew 11:25-30. Life has burdens. Death is a burden. God moves in to assist, to help, to carry when we cannot. This is a message of hope for someone who has lived long, perhaps suffered long, and is finally at rest. God promises for us, “I am the same.”