Charles Spurgeon Commentary Hebrews 11:8-10

"By faith Abraham, when he was called, obeyed to go out unto a place which he was to receive for an inheritance; and he went out, not knowing whither he went. By faith he became a sojourner in the land of promise, as in a [land] not his own, dwelling in tents, with Isaac and Jacob, the heirs with him of the same promise: for he looked for the city which hath the foundations, whose builder and maker is God." — Hebrews 11:8-10 (ASV)

By faith Abraham, when he was called to go out into a place which he should after receive for an inheritance, obeyed: and he went out, not knowing whither he went. By faith he sojourned in the land of promise, as in a strange country, dwelling in tabernacles with Isaac and Jacob, the heirs with him of the same promise: For he looked for a city which hath foundations, whose builder and maker is God.

Here you have the expectation of faith. Faith does not live on things seen; she lives on something yet to come. That which is to come she regards as eternal, not like a mere tent in which she dwells here, but a city that has foundations, fixed and firm. Next we see the strength of faith, that strength seen in the deadness of nature.