Section 633.33, The Code; Larson v. Anderson, 167 N.W.2d 640, 642 (Iowa 1969); Houts v. Jameson, 201 N.W.2d 466, 468 (Iowa 1972). "While weight will be given to findings of trial court this court will not abdicate its function as triers de novo on appeal. * * * [citing authority]."