At Theopedia.com you will find helpful background information on The Biblical Theology of the Sabbath.
Here is a sample:
However, we must also look to the development of Sabbatical themes within the Gospels as we look to Jesus’ interaction with this topic of the Sabbath. One of these themes, perhaps the most striking, is that of rest. In Matt. 11:25–30, Jesus tells all who are weary and burdened to come to him, and he will give them rest. The rest promised in the Pentateuch, pointed to by the Sabbath of the Old Covenant, is the rest which is found in Jesus, and in him only.
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