At the same time; together with.
But when I found that he had committed nothing worthy of death, and that he himself hath appealed to Augustus, I have determined to send him. Of whom I have no certain thing to write unto my lord. Wherefore I have brought him forth before you, and specially before thee, O king Agrippa, that, after examination had, I might have somewhat to write. For it seemeth to me unreasonable to send a prisoner, and not WITHAL to signify the crimes laid against him. ( Acts 25:25-27 )
Bibliography Information"Entry for 'Withal'". A King James Dictionary.