Cross Reference 1 CHRONICLES 2:3 THE SONS OF JUDAH ER AND ONAN AND SHELAH WHICH THREE WERE BORN UNTO HIM OF THE DAUGHTER OF SHUA THE CANAANITESS AND ER THE FIRSTBORN OF JUDAH WAS EVIL IN THE SIGHT OF THE LORD AND HE SLEW HIM

{1 Chronicles 2:3} The sons 1121 of Judah; 3063 Er, 6147 and Onan, 209 and Shelah: 7956 [which] three 7969 were born 3205 z8738 unto him of the daughter 1323 x4480 of Shua y7774 z8677 y1340 x7770 the Canaanitess. 3669 And Er, 6147 the firstborn 1060 of Judah, 3063 was x1961 evil 7451 in the sight 5869 of the LORD; 3068 and he slew 4191 z8686 him.

and:
"And of¹ the Shilonites;ª Asaiahª the firstborn,ª and his sons.ª" {1Ch 9:5} + "And Judahª sawª ° there¹ a daughterª of a certainª Canaanite,ª whose nameª [was] Shuah;ª and he took¹ her,² ° and went inª ° unto¹ her. ... And the thing whichª he didª ° displeasedª ² °¹ the LORD:ª wherefore he slewª ° him also.¹" {Gen 38:2-10} + "And the sonsª of Judah;ª Er,ª and Onan,ª and Shelah,ª and Pharez,ª and Zerah:ª but Erª and Onanª diedª ° in the landª of Canaan.ª And the sonsª of Pharezª were¹ Hezronª and Hamul.ª" {Gen 46:12} + "The sonsª of Judahª [were] Erª and Onan:ª and Erª and Onanª diedª ° in the landª of Canaan.ª" {Num 26:19}