John 20:30-31

The Purpose of This Book

30 aNow Jesus did many other signs bin the presence of the disciples, which are not written in this book; 31 cbut these are written so that you may dbelieve that Jesus is the Christ, ethe Son of God, and that by believing fyou may have life gin his name.

Romans 15:4

4For hwhatever was written in former days was written for our iinstruction, that through endurance and through jthe encouragement of the Scriptures we might have hope.

Galatians 4:30

30But what does the Scripture say? k“Cast out the slave woman and her son, for the son of the slave woman shall not inherit with the son of the free woman.”
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