But didn't the OT endorse the casting of “lots”? Yes, but casting of lots “is a biblical illustration not of gambling (for no money or other value was placed at risk in hopes of greater gain) but of individuals trusting a sovereign God to direct the ‘chance’ disposition or direction of the lay of the lots. People used ‘chance’ to understand God's will. Their faith was not in chance but in God” (Rogers, CRJ, p. 21-22). Be it noted, also, that subsequent to the casting of lots in Acts 1 the practice is nowhere mentioned (or endorsed) in Scripture. It would appear that, with Pentecost and the coming of the fullness of the Holy Spirit, God has dispensed with all such forms of ascertaining His will.
Sam Storms